Original PR description

Problem:
When there are many products, stock moves, and sale orders, running the Stock Valuation report can take several minutes, or result in a memory error. This is caused by 2 things:
1. `_compute_goods_delivered_not_invoiced` repeatedly runs `filtered` on a large volume of sale order lines
2. `company.stock_value()`, which recomputes every product's total value, is called twice

Solution:
We will reduce the memory usage by only fetching the `order_id` on the sale order lines, and speed things up by replacing the `filtered` call with a more intentional `search_fetch`. We will also add a way to circumvent the second `stock_value()` call in `_get_stock_valuation_account_vals`, since it is the same as the first call.

Benchmarks:
| Products | Stock Moves | Sale Order Lines | Before | After |
|---|---|---|---|---|
|9,278|228,066|203,403|7.2min|32.32s|

A 93% speed improvement.

opw-5472879